How to get current marker's name via python?
Each marker has a camera and a name property. Easy to figure out using the python console:

&gt;&gt;&gt; C.scene.timeline_markers['F_01'].
                                     as_pointer(
                                     bl_rna
                                     camera
                                     ...
                                     name
                                     ...


To get the cameras just iterate through the markers:

&gt;&gt;&gt; for m in C.scene.timeline_markers:
...     print ("Marker name:", m.name)
...     print ("Camera object:", m.camera)
...     print ("Camera name:", m.camera.name)
...     
Marker name: F_01
Camera object: &lt;bpy_struct, Object("Camera")&gt;
Camera name: Camera